671266013 has 12 divisors (see below), whose sum is σ = 741118560. Its totient is φ = 607528680.

The previous prime is 671265997. The next prime is 671266027. The reversal of 671266013 is 310662176.

It is not a de Polignac number, because 671266013 - 2⁴ = 671265997 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671266613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15248 + ... + 39686.

It is an arithmetic number, because the mean of its divisors is an integer number (61759880).

Almost surely, 2^671266013 is an apocalyptic number.

It is an amenable number.

671266013 is a deficient number, since it is larger than the sum of its proper divisors (69852547).

671266013 is a wasteful number, since it uses less digits than its factorization.

671266013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24688 (or 24677 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 671266013 is about 25908.8018441610. The cubic root of 671266013 is about 875.5848119888.

The spelling of 671266013 in words is "six hundred seventy-one million, two hundred sixty-six thousand, thirteen".